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Hestiawan, Hendri; Jamasri, Jamasri; Kusmono, Kusmono

doi:10.36289/jtmi.v15i1.147

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…This structure can be clearly seen in the high magnification SEM micrograph (Figure 10d) of the OCF surface. Other studies also reported the micro changes of the fiber surface after alkali treatment [15,31], which are conducive to improving the interfacial adhesion between coir fiber and the polymer matrix. When the composites are produced, the fluid-like matrix material can enter the bumpy surface structure, and mechanical interlocking between the coir fiber and the polymer matrix can be produced after solidification, thus effectively improving the interfacial bonding performance between them [32,33].…”

Section: Scanning Electron Microscopy Observation and Analysismentioning

confidence: 96%

“…The results showed that the tensile strength of alkali-treated and alkali-silanetreated fibers increased compared with untreated fibers, while that of silane-treated fibers decreased in comparison. In addition, the interfacial shear strength of the fibers treated in the above three ways rose compared with untreated ones [15]. Loong et al treated flax fiber with acetic anhydride to investigate the effect on the properties of flax fiber epoxy composites.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Objective Optimization and Analysis of Mechanical Properties of Coir Fiber from Coconut Forest Waste

Zhao

Yang

2022

Forests

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As a type of natural fiber with excellent elongation, coir fiber has been applied in a wide range of fields. To ensure superb performance, coir fiber is usually treated with alkali before being applied. Previous studies paid little attention to the multiple alkali treatment of coir fiber; however, this study focuses on its influence on the mechanical properties of coir fiber and conducts multi-objective optimization and analysis of the tensile strength, elastic modulus and elongation of coir fiber. Our objective is the comprehensive enhancement of the mechanical properties of coir fiber. In this study, the experimental design is based on the Box-Behnken design method, and three treatment parameters were selected for the study, namely NaOH concentration, treatment time and treatment temperature. Analysis of variance (ANOVA) was adopted to analyze the experimental data, and response surface methodology (RSM) was used to investigate how the treatment factors interact with each other and affect the responses values. To improve the tensile strength, elastic modulus and elongation of coir fiber simultaneously, the experimental parameters were optimized. The results showed that the optimal values of NaOH concentration, treatment time and treatment temperature were 4.12%, 15.08 h and 34.21 °C, respectively. Under these conditions, the tensile strength of coir fiber was 97.14 MPa, the elastic modulus was 2.98 GPa and the elongation was 29.35%, which were 38.28%, 39.91% and 25.59% higher than that of untreated coir fiber, respectively. Furthermore, scanning electron microscopy (SEM), thermogravimetric analysis (TGA-DTG), Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were used to analyze the changes in surface, weight loss, composition and crystallinity of coir fiber treated with alkali under optimum conditions compared with untreated coir fiber to obtain a deeper insight into the influential mechanisms of alkali treatment.

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Section: Scanning Electron Microscopy Observation and Analysismentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization and Analysis of Mechanical Properties of Coir Fiber from Coconut Forest Waste

Zhao

Yang

2022

Forests

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“…The free ends of the fibers in the specimens were carefully fixed on a mounting tap to obtain a calibrated length of 30 mm. A Shimadzu ® EZ-Test machine with a load cell of 100 N was used to perform the pull-out tests, and a crosshead speed of 5 mm/min was set [37]. The specimens were clamped with the fixed lower crosshead, and the fiber was pulled out with the movable upper crosshead.…”

Section: Pull-out Testmentioning

confidence: 99%

Investigation of the Effect of Chemical Treatment on the Properties of Colombian Banana and Coir Fibers and Their Adhesion Behavior on Polylactic Acid and Unsaturated Polyester Matrices

Barrera-Fajardo,

Rivero-Romero,

Unfried-Silgado

2024

Fibers

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In this work, the adhesion behavior of chemically treated banana and coir Colombian fibers embedded in polylactic acid (PLA) and unsaturated polyester resin (UPR) matrices was investigated. Both types of fibers were treated with a 5 wt.% sodium hydroxide solution for one hour. The properties of treated and untreated fibers were determined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and tensile tests. To evaluate the adhesion behavior of the fibers in PLA and UPR matrices, pull-out tests were performed, and the percentage of broken fibers was determined. The results showed that alkaline treatment improved the fibers’ physicochemical, mechanical, and thermal properties. In addition, the alkaline treatment was able to improve the adhesion behavior of coir and banana fibers to PLA and UPR matrices. The banana fibers showed a percentage of broken fibers of 100%, while the coir fibers showed a slight increase in IFSS value. This behavior is attributed to the improvement in surface roughness due to the removal of non-cellulosic composites and impurities.

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“…Banana pseudostem samples were cut vertically into thin strips and were dried in an oven at 100 ± 5 • C. They were then ground and sieved to obtain microfibers (MFs) [29]. To obtain microcrystalline cellulose (MCC), an alkaline stage and a bleaching stage were carried out [30]. The alkaline treatment was carried out with NaOH for 45 min at 75 • C under stirring, the MFs were washed after each alkaline treatment with distilled water.…”

Section: Cellulose Microcrystalline Isolationmentioning

confidence: 99%

Gelatin-Based Hydrogels Containing Microcrystalline and Nanocrystalline Cellulose as Moisture Absorbers for Food Packaging Applications

Acevedo-Puello,

Figueroa-López,

Ortega-Toro

2023

J. Compos. Sci.

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Sustainable hydrogels are an innovative biodegradable alternative to traditional packaging materials. They offer exceptional water absorption capacity and high biocompatibility, making them ideal food absorbents to reduce plastic waste, extend shelf life and ensure the safety and quality of packaged foods. In this study, hydrogels based on gelatin, microcrystalline cellulose (MCC), and nanocrystalline cellulose (NCC) were developed, characterized, and applied in the packaging of chicken breasts. For this, MCC was isolated from the banana pseudostem and commercial NCC was incorporated into a gelatin solution to produce the hydrogel materials by film casting. The resulting hydrogels were analyzed in terms of morphology, structural properties, water absorption capacity, mechanical strength, and color properties. The results showed that the incorporation of MCC and NCC significantly improved the mechanical integrity of the hydrogels, which prevented premature deformation of the hydrogels when they absorbed moisture. In addition, changes in the color properties of chicken breast samples in contact with the hydrogels were observed, indicating their ability to preserve food quality. Subsequently, the effectiveness of the hydrogels for chicken breast storage at 4 °C for 4 days was validated. The results demonstrated that the hydrogels developed in this study are a sustainable and environmentally friendly alternative to traditional packaging materials that can extend the shelf life of food products while maintaining their physical and microbiological integrity.

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Cited by 3 publications

References 6 publications

Multi-Objective Optimization and Analysis of Mechanical Properties of Coir Fiber from Coconut Forest Waste

Multi-Objective Optimization and Analysis of Mechanical Properties of Coir Fiber from Coconut Forest Waste

Investigation of the Effect of Chemical Treatment on the Properties of Colombian Banana and Coir Fibers and Their Adhesion Behavior on Polylactic Acid and Unsaturated Polyester Matrices

Gelatin-Based Hydrogels Containing Microcrystalline and Nanocrystalline Cellulose as Moisture Absorbers for Food Packaging Applications

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